参数资料
型号: MC33063AP1
厂商: ON Semiconductor
文件页数: 11/15页
文件大小: 0K
描述: IC REG BUCK BOOST INV ADJ 8DIP
产品变化通告: LTB Notification 03/Jan/2008
标准包装: 50
类型: 降压(降压),升压(升压),反相
输出类型: 可调式
输出数: 1
输出电压: 1.25 V ~ 40 V
输入电压: 3 V ~ 40 V
频率 - 开关: 33kHz
电流 - 输出: 1.5A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 通孔
封装/外壳: 8-DIP(0.300",7.62mm)
包装: 管件
供应商设备封装: 8-PDIP
其它名称: MC33063AP1OS
MC34063A, MC33063A, SC34063A, SC33063A, NCV33063A
Calculation
Step ? Up
Step ? Down
Voltage ? Inverting
in(min)
* V
* V sat
in
t on /t off
V out ) V F
V
in(min)
* V sat
V
V out ) V F
in(min) * V sat * V out
|V out| ) V F
V
ton
) 1
off
ton
) 1
off
ton
) 1
off
(t on + t off )
t off
t on
1
f
t on ) t off
t
(t on + t off ) ? t off
1
f
t on ) t off
t
(t on + t off ) ? t off
1
f
t on ) t off
t
(t on + t off ) ? t off
C T
4.0 x
10 ? 5
t on
4.0 x
10 ? 5
t on
4.0 x 10 ? 5 t on
off
off
I pk(switch)
2I
out(max)
t on
t
) 1
2I
out(max)
2I
out(max)
t on
t
) 1
R sc
0.3/I pk(switch)
0.3/I pk(switch)
0.3/I pk(switch)
pk(switch)
pk(switch)
L (min)
(V
I
in(min) * V sat)
t
on(max)
(V
in(min)
I
* V sat * V out)
pk(switch)
t
on(max)
(V
I
in(min) * V sat)
t
on(max)
pk(switch) on
ripple(pp)
off
C O
9
V
I outt on
ripple(pp)
I
8V
(t ) t
)
9
V
I outt on
ripple(pp)
V out ? Desired output voltage, |V out | + 1.25 1 ) R2
I out ? Desired output current.
V sat = Saturation voltage of the output switch.
V F = Forward voltage drop of the output rectifier.
The following power supply characteristics must be chosen:
V in ? Nominal input voltage.
R1
f min ? Minimum desired output switching frequency at the selected values of V in and I O .
V ripple(pp) ? Desired peak ? to ? peak output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its
equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the
line and load regulation.
NOTE: For further information refer to Application Note AN920A/D and AN954/D.
Figure 17. Design Formula Table
http://onsemi.com
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参数描述
MC33063AP1G 功能描述:直流/直流开关调节器 40V 1.5A Buck/Boost/Inverting RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
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